Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752649AbWKBEqg (ORCPT ); Wed, 1 Nov 2006 23:46:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752648AbWKBEqg (ORCPT ); Wed, 1 Nov 2006 23:46:36 -0500 Received: from colo.lackof.org ([198.49.126.79]:17324 "EHLO colo.lackof.org") by vger.kernel.org with ESMTP id S1752441AbWKBEqf (ORCPT ); Wed, 1 Nov 2006 23:46:35 -0500 Date: Wed, 1 Nov 2006 21:46:33 -0700 From: Grant Grundler To: Linas Vepstas Cc: Matthew Wilcox , linux-scsi@vger.kernel.org, linux-pci@atrey.karlin.mff.cuni.cz, linux-kernel@vger.kernel.org Subject: Re: [PATCH]: PCI Error Recovery: Symbios SCSI device driver Message-ID: <20061102044633.GB23840@colo.lackof.org> References: <20061020180510.GN6537@austin.ibm.com> <20061031185506.GE26964@parisc-linux.org> <20061031231334.GR6360@austin.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20061031231334.GR6360@austin.ibm.com> X-Home-Page: http://www.parisc-linux.org/ User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 842 Lines: 22 On Tue, Oct 31, 2006 at 05:13:34PM -0600, Linas Vepstas wrote: ... > > Though, since INB and INW will return 0xff and 0xffff, why not use that > > as our test rather than using a counter? > > Right. I wanted to avoid checking for specific values, > as that vaguely seemed more robust; the direct check is easier. ISTR some chipsets return 0 or the most recent data on the bus when INB/INW master-abort. Maybe this an ISA bus behavior? Or is config space access the only space which behaves this way for master abort on PCI? I'm looking at drivers/pci/probe.c:pci_scan_device(). thanks, grant - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/